High Core-Wall Delivery Particles for Low-Leakage Fragrance Release
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Solution Overview
Problem
Existing consumer products face challenges in efficiently delivering benefit agents, such as fragrance, with issues like increased leakage, premature rupture, and suboptimal release profiles due to particle size and wall material selection, leading to inefficiencies in delivery and performance.
Innovation Solution
The formulation of delivery particles with specific core:wall ratios, particle sizes, and the use of (meth)acrylate polymers derived from multifunctional monomers, which include a partitioning modifier in the core, to achieve reduced leakage and desirable release profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If particle size is increased to improve delivery efficiency, then payload capacity is improved, but leakage increases and rupture timing becomes uncontrolled
Solution Approach 1:
The patent applies parameter changes by optimizing the core:wall ratio to specific ranges (90:10 to 99:1) and controlling particle size within defined boundaries (10-100 microns). These parameter optimizations enable large particles to maintain both high payload capacity and low leakage, resolving the contradiction between quantity and reliability.
2Quantity of substance
If relative amount of benefit agent in the core is increased to improve delivery efficiency, then payload is improved, but leakage increases due to thinner walls
Solution Approach 1:
The patent resolves this contradiction by defining optimal parameter ranges for core:wall ratio (90:10 to 99:1) and particle size (10-100 microns). These parameter changes enable the system to achieve high benefit agent concentration while maintaining adequate wall thickness to prevent leakage, allowing both payload and reliability to be optimized simultaneously.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The described formulation results in delivery particles with high payload and efficient release profiles, minimizing leakage and ensuring consistent delivery of benefit agents across various consumer products.
Implementation Method 1
release the benefit agent upon certain triggers
Implementation Method 2
the core includes a benefit agent and a partitioning modifier
Data Source
AI summary
Consumer products that include treatment adjuncts and delivery particles having certain sizes, certain monomers (for example, multifunctional (meth)acrylate monomers), and certain core:wall polymer weight ratios. Methods related to the use and manufacture of such compositions, including methods of treating a surface, such as a fabric.